When alcohol fuel is poured into the fuel tank, the alcohol fuel will reach the lower end of the combustion chamber due to capillary phenomenon that occurs on the inside of the cup and the outer side of the middle part.
When igniting the alcohol fuel in the fuel tank, the combustion warms the enclosure and the alcohol fuel in the combustion vapor begins to evaporate.
The alcohol vapor in the fuel vapor is increasingly expanded and burned from the hole (tinder) located on the top of the fuel vapor.
When combustion rises the temperature of the enclosure, and the expansion pressure of the alcohol vapor in the fuel vapor exceeds the appropriate value, the alcohol vapor returns to the fuel tank through the return channels to the fuel tank. Therefore, it has high fire power, but there is no need to worry about exploding due to abnormal rises of internal pressure like pressurized alcohol stoves with the same high flame power.
Fuel injection
Ignition
Book Burning
blowback